CN2620903Y - Motor no-load, short-circuit training device - Google Patents
Motor no-load, short-circuit training device Download PDFInfo
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- CN2620903Y CN2620903Y CN 03232827 CN03232827U CN2620903Y CN 2620903 Y CN2620903 Y CN 2620903Y CN 03232827 CN03232827 CN 03232827 CN 03232827 U CN03232827 U CN 03232827U CN 2620903 Y CN2620903 Y CN 2620903Y
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- motor
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- control circuit
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Abstract
The utility model relates to a no-load, short circuit training device for electrical motors, belonging to a teaching demonstration mould, which includes a three-phase voltage regulator T and an electrical motor M of a control circuit board. The control circuit board is composed of a wiring connection mounting board (1) arranged with components, testing meters and a trunking board (2). All the components and the testing meters are regularly arranged on the wiring connection board according to the wiring connection rules of the control circuit. All the components and the testing meters arranged on the wiring connection board are arranged with an automatic air switch QF, fuses FU, contactors KM, thermorelays FR, current transformers TA, a connection terminal board XT, voltmeters V, current meters A, a power factor meter COS Psi, wattmeters KW, indicator lights EL, and button switches SB. All the components, the testing meters, the three-phase voltage regulator T and the electrical motor M are electrically connected according to the control circuit of the no-load, short circuit motor. All the components, the testing meters and the indicator light of the utility model are simple, clear, and standard in arrangement. The connections of the leads are intuitive, and convenient for standard teaching and demo operation.
Description
Technical field
The utility model belongs to the teaching mould technical field, makes the device of skill training and examination, evaluation in fact in particular for electrical towage control circuit.
Background technology
In the Electric Traction teaching of school especially skilled workers school, relate to the teaching of motor zero load, short circuit operation circuit, except allowing the student grasp theoretically the ABC of operation circuit, it more is the mode of connection that will allow the student from practical operation, be familiar with the principle of work of operation circuit intuitively and expertly grasp operation circuit, in the examination of electrician specialty workman's vocational skills and identifying, also whether the operation circuit of checking the examination personnel of institute to run in requisition for a device that overlaps standard is correct.Yet, in existing school instruction, be mostly that making some coarse, simple and crude operation circuit trainers by teacher oneself according to the needs of teaching starts to learn for the student.These Electrical Engineering Practice trainers normally teacher are made according to own understanding and teaching needs to teaching material, and randomness is bigger, and standardization is relatively poor, do not possess versatility yet, the practical operation knowledge standard that causes the student to acquire differs, and level is uneven, being poor in basic training of grasp; Simultaneously, do not have unified and standard teaching and training device, brought certain inconvenience yet to teachers ' teaching.In addition, in existing electrician's vocational skills examination and identifying, that adopt or traditional checks the operation circuit wiring correctness that the examination personnel of institute are run in one by one by the chief examiner teacher, still the device that does not have the cover examination check workman practical operation level that relatively standard is perfect, cause the disunity of appraisal standards easily, factor and individual subjective factor is big, the accuracy and the fairness of influence examination qualification result.
Summary of the invention
The purpose of this utility model provides a kind of course of work that can demonstrate the operation circuit of motor zero load, short circuit intuitively of unifying standard in order to overcome above-mentioned the deficiencies in the prior art just, can also be used for the mode of connection of this operation circuit of student's hands-on and operation steps, and can be used to examine motor zero load, the short circuit trainer of identifying the students ' actual situation operant level.
The purpose of this utility model is achieved by the following technical solution.
The zero load of this motor, the short circuit trainer includes control circuit board, three-phase regulator T and motor M, described control circuit board is that the wiring installing plate is provided with components and parts, test instrumentation and wire casing plate, each components and parts and test instrumentation are arranged regularly by operation circuit wiring rule on the wiring installing plate, set components and parts and test instrumentation have automatic air-break switch QF, fuse FU, contactor KM, electrothermal relay FR, current transformer TA, terminal board XT, voltage table V, reometer A, power-factor indicator COS φ, power meter KW, pilot lamp FL and pushbutton switch SB, each components and parts, test instrumentation, three-phase regulator T, press the motor zero load between the motor M, the operation circuit of short circuit is electrically connected.
Described control circuit board, the position distribution of its each components and parts on the wiring installing plate are divided into left and right two big zones, and left area first row is arranged in order automatic air-break switch QF, three-phase fuse FU
1, two-phase fuse FU
2With 1 current transformer TA
1, second row is arranged 4 contactor KM
1～KM
4With 1 current transformer TA
2, the third line is arranged 2 electrothermal relay FR
1, FR
2With 1 current transformer TA
3, fourth line is arranged terminal board XT, is provided with the wire casing plate between the periphery of left area and the per two row components and parts, and all leads that connect components and parts all are arranged in the wire casing plate; Zone, the right first row is arranged in order pilot lamp EL, voltage table V
1, V
2With power-factor indicator COS φ, second row is arranged 3 voltage table V
Empty 1～V
Empty 3With 1 power meter KW
1, the third line is arranged 3 reometer A
Empty 1～A
Empty 3, fourth line is arranged 3 voltage table V
Short 1～V
Short 3With 1 power meter KW
2, fifth line is arranged 3 reometer A
Short 1～A
Short 3, the 6th row is arranged with 4 pushbutton switch SB
1～SB
4On contactor, also be plugged with auxiliary contact.
The operation circuit principle of motor zero load, short circuit is the knowledge that the electrician specialty those of ordinary skill is known altogether, also is the content that must learn in electrician's teaching materials at different levels.Components and parts that the utility model is required with motor zero load, short circuit operation circuit and test instrumentation all reasonably are provided with in order according to the wiring characteristics of its operation circuit and are installed on the wiring installing plate, and the wire casing plate has been installed on the wiring installing plate on demand, can between each components and parts, have been carried out the soft wiring of laying easily; Set measuring instrument can detect the course of work of the working condition of operation circuit and motor zero load, short circuit at any time.Each components and parts of the utility model are provided with succinct, clear, lead connects intuitively visual, and instrument, display lamp are arranged in order, and button is convenient to operation, be convenient to fault analysis, inspection and eliminating, refer to and have certain practical value on the industrial electric opertaing device operation circuit.Use the utility model, the teacher demonstrates after can carefully connecting the wire, and the principle of work and the process of the operation circuit of motor zero load, short circuit shown intuitively, can also be done it yourself after the wiring by the student, and whether the check wiring is correct.In examination is identified, the control circuit board that is run in addition by the examination personnel can be inserted the operation circuit that terminal board replaces this device, the correctness of its winding displacement of energising check.
Further set forth the utility model below in conjunction with Figure of description.
Description of drawings
Fig. 1 is a front view of the present utility model,
Fig. 2 is A '-A ' cut-open view of Fig. 1,
Fig. 3 is B '-B ' cut-open view of Fig. 1,
Fig. 4 is the wiring schematic diagram of terminal board,
Fig. 5 is the electrical schematic diagram of motor zero load, short circuit.
Embodiment
As Fig. 1～shown in Figure 3, various components and parts, test instrumentation and wire casing plate 2 are set on wiring installing plate 1, the position distribution of each components and parts on wiring installing plate 1 is divided into left and right two big zones, and left area first row is arranged in order automatic air-break switch QF, three-phase fuse FU
1, two-phase fuse FU
2With the 1st current transformer TA
1, second row is arranged 4 contactor KM
1～KM
4With the 2nd current transformer TA
2, the third line is arranged 2 electrothermal relay FR
1, FR
2With the 3rd current transformer TA
3, fourth line terminal board XT is provided with wire casing plate 2 between the periphery of left area and the per two row components and parts, and all leads that connect components and parts all are arranged in the wire casing plate; Zone, the right first row is arranged in order display lamp EL, voltage table V
1, V
2With power-factor indicator COS φ, second row is arranged 3 voltage table V
Empty 1～V
Empty 3With 1 power meter KW
1, the third line is arranged 3 reometer A
Empty 1～A
Empty 3, fourth line is arranged 3 voltage table V
Short 1～V
Short 3With 1 power meter KW
2, fifth line is arranged 3 reometer A
Short 1～A
Short 3, the 6th row is arranged with 4 pushbutton switch SB
1～SB
4Because it is bigger that three-phase regulator occupies,, three-phase regulator T is placed on the work top of training usefulness usually for ease of arranging and operation.One power converter also can be set to be connected with power-factor indicator.By Fig. 4, shown in Figure 5 each components and parts, test instrumentation and three-phase regulator are electrically connected, just constituted the utility model.Three-phase fuse FU is set
1Can form protection, single-phase fuse FU to main circuit
2Control loop is protected electrothermal relay FR
1, FR
2Can form overload protection to motor.
When carrying out no-load test, power turn-on switch QF, supply voltage Table V
1, whether pilot lamp EL display power supply circuit normal, pressure regulator T gets electric, presses the button SB
1, KM
1, KM
3Coil gets electric, KM
1The self-locking of self-locking contact closure, KM
1The main contact closure, motor operation.Regulate pressure regulator T to a certain load voltage value such as 250V, motor is run well, voltage table V under rated voltage
Empty 1～V
Empty 3, reometer A
Empty 1～A
Empty 3, power-factor indicator COS φ shows KM
3The closed access power table of main contact KW
1, power meter shows, just can determine motor no-load current and loss, thus the iron loss of obtaining and mechanical loss.Press SB
3Can stop.
During short-circuit test, power turn-on QF, supply voltage Table V
1, pilot lamp EL shows whether operation circuit normal, and pressure regulator T gets electric, presses the button switch S B
2, KM
2, KM
4Coil gets electric, KM
2The self-locking of self-locking contact closure, KM
2The main contact closure, KM
4The main contact closure.Because motor generation stall so regulate pressure regulator T, slowly rises its voltage during short-circuit test.With power meter KW
2Insert, when reometer is designated as rated current, at this moment, the voltage V of demonstration
2Be short-circuit voltage.Voltage table V
Short 1～V
Short 3, reometer A
Short 1～A
Short 3The voltage and current situation of change that shows threephase motor A, B, C phase respectively, power meter KW
2The situation of change of power when showing motor short circuit.Calculate by observing, it is qualified that motor short circuit voltage generally should be 70～95V, otherwise institute's test motor should be considered as defective motor.Therefore, short-circuit test can be used to judge the workmanship of motor.Press SB
4Can stop.
Claims (3)
1, the motor zero load, the short circuit trainer, the course of work of its control circuit and wiring training and the examination of carrying out operation circuit when being used to demonstrate motor zero load or short circuit, it is characterized in that, it includes control circuit board three-phase regulator T and motor M, described control circuit board is that wiring installing plate (1) is provided with components and parts, test instrumentation and wire casing plate (2), each components and parts and test instrumentation are arranged regularly by operation circuit wiring rule on the wiring installing plate, set components and parts and test instrumentation have automatic air-break switch QF, fuse FU, contactor KM, electrothermal relay FR, current transformer TA, terminal board XT, voltage table V, reometer A, power-factor indicator COS φ, power meter KW, pilot lamp EL and pushbutton switch SB, each components and parts, test instrumentation, three-phase regulator T, press the motor zero load between the motor M, the operation circuit of short circuit is electrically connected.
2, trainer according to claim 1, it is characterized in that, described control circuit board, the position distribution of its each components and parts on wiring installing plate (1) are divided into left and right two big zones, and left area first row is arranged in order automatic air-break switch QF, three-phase fuse FU
1, two-phase fuse FU
2With 1 current transformer TA
1, second row is arranged 4 contactor KM
1～KM
4With 1 current transformer TA
2, the third line is arranged 2 electrothermal relay FR
1, FR
2With 1 current transformer TA
3, fourth line is arranged terminal board XT, is provided with wire casing plate (2) between the periphery of left area and the per two row components and parts, and all leads that connect components and parts all are arranged in the wire casing plate; Zone, the right first row is arranged in order pilot lamp EL, voltage table V
1, V
2With power-factor indicator COS φ, second row is arranged 3 voltage table V
Empty 1～V
Empty 3With 1 power meter KW
1, the third line is arranged 3 reometer A
Empty 1～A
Empty 3, fourth line is arranged 3 voltage table V
Short 1～V
Short 3With 1 power meter KW
2, fifth line is arranged 3 reometer A
Short 1～A
Short 3, the 6th row is arranged with 4 pushbutton switch SB
1～SB
4
3, trainer according to claim 1 is characterized in that, also is plugged with auxiliary contact on contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232827 CN2620903Y (en) | 2003-01-11 | 2003-01-11 | Motor no-load, short-circuit training device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232827 CN2620903Y (en) | 2003-01-11 | 2003-01-11 | Motor no-load, short-circuit training device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2620903Y true CN2620903Y (en) | 2004-06-16 |
Family
ID=34248711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03232827 Expired - Fee Related CN2620903Y (en) | 2003-01-11 | 2003-01-11 | Motor no-load, short-circuit training device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2620903Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332087A (en) * | 2014-10-31 | 2015-02-04 | 盐城工业职业技术学院 | Circuit for testing during electrical control practical training of vocational college students |
| CN105486972A (en) * | 2015-11-30 | 2016-04-13 | 国家电网公司 | Induction equipment no load/ short circuit integrated tester |
| CN107862953A (en) * | 2017-12-14 | 2018-03-30 | 北京科技大学天津学院 | Current overload and short circuit endanger demonstrator |
-
2003
- 2003-01-11 CN CN 03232827 patent/CN2620903Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332087A (en) * | 2014-10-31 | 2015-02-04 | 盐城工业职业技术学院 | Circuit for testing during electrical control practical training of vocational college students |
| CN105486972A (en) * | 2015-11-30 | 2016-04-13 | 国家电网公司 | Induction equipment no load/ short circuit integrated tester |
| CN107862953A (en) * | 2017-12-14 | 2018-03-30 | 北京科技大学天津学院 | Current overload and short circuit endanger demonstrator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |